//
//  XYObject.h
//  KVO
//
//  Created by yao zhaofeng on 2018/4/4.
//  Copyright © 2018年 YaoZhaofeng. All rights reserved.
//

#import <Foundation/Foundation.h>

@interface XYObject : NSObject
@property (nonatomic, assign) int x;
@property (nonatomic, assign) int y;
@property (nonatomic, assign) int z;
@property (nonatomic, assign) int age;
@end
